Diodes Incorporated
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PI3EQX6741ST (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

3.3V, 1-port SATA3i ReDriver with Digital Configuration, Standby Auto Slumber Mode, and HDD Detect Power Saving Mode

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Product Description

PI3EQX6741ST is a low power, signal SATA Gen 3i 6Gbps ReDriver. The device provides programmable equalization and output emphasis, to optimize performance over a variety of physical mediums by reducing Inter-Symbol Interference. PI3EQX6741ST supports two 100Ω Differential CML data I/O’s between the Protocol ASIC to a switch fabric, across a backplane, or to extend the signals across other distant data pathways on the user’s platform.

The integrated equalization circuitry provides flexibility with signal integrity of the signal before the ReDriver.

A low-level input signal detection and output squelch function is provided for each channel. Each channel operates fully independently. When the channels are enabled (EN=1) and operating, that channels input signal level (on xI+/-) determines whether the output is active. If the input signal level of the channel falls below the active threshold level (Vth) then the outputs are driven to the common mode voltage.

Termination Detect indication (TDet_A# or TDET_B#) provides indication when the load is connected ie HDD or Host. This can be used as control to go into power saving mode by either the host or HDD.

In addition to signal conditioning, when EN = 0, the device enters a low power standby mode.


  • Supports SATA Gen 3i.
  • Two 6Gbps differential signal pairs
  • 100Ω Differential CML I/O’s
  • Input signal level detect and squelch for each channel
  •  OOB Support
  • Automatic HDD Rate detection for output swing/emphasis setting
  • Termination detect indication
    • Power saving mode control to Host or HDD
  • Adjustable Receiver Equalization
  • Selectable Output Pre-emphasis and Swing Control
  • High impedance I/O termination in standby mode
  • ESD +/-8kV
  • Low Power Operation: 254mW typical
  • Auto-Slumber Mode: 36mW typical
  • HDD unplugged: 3.6mW
  • Power down Stand-by Mode: 0.7mW max
  • Supply Voltage: 3.3V ±10%
  • Packaging: 20-TQFN (4x4mm)


  • Notebook, desktop, docking station, Set Top Box, Server Workstation, Data Storage

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 2
Data Rate (Gbps) 6
Lanes/Ports 1
Output Swing Max (mV) 600
Programming Interface(s) Pinstrap

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Technical Documents

Application Information

Design tool model software


Evaluation Boards and User Guides

Recommended Soldering Techniques


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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2672 2024-03-11 2024-09-07 Device End of Life (EOL)
PCN-2520 2021-05-27 2021-08-27 Qualified Additional Bump Site and Assembly/Test (A/T) Sites
PCN-2328 2018-04-12 2018-10-12 Device End of Life for tray packaging only